I've just created a zip file with the SVN version of Geany. Get it from http://files.uvena.de/geany/geany_svn_win32.zip.
Please note that from now on the GTK file open dialog is used instead of the default Windows file open dialog. We extended the GTK file open dialog to have drop down boxes for setting a filetype and encoding for the opened files and the Windows dialog is missing them(unless someone writes it). If you want to have back the "old" default Windows dialog, you have to compile the sources by yourself and uncommenting the last macro in win32-config.h. Documentation for this will follow.
-- Get my GPG key from http://www.uvena.de/pub.key